AZ vs. CA:04 California Exhibits, Vol. IV; Nos. 151-192

page 98

THE ALL-AMERICAN CANAL. banks and the structures at the power plant, giving a total fall of 30 feet. The plans at this site are for the development of 4 units of 4,500 turbine horsepower each. (d) Power plant No. 2 is situated 5 miles west of power plant No. 1. At this site a head of 47 feet can be obtained. The plans are for the development of 4 units of 6,500 turbine horsepower each. (e) The above developments are for the maximum capacity of the canals. At power plants Nos. 1 and 2 the discharge during the minimum flow of the river may fall to 20 or 25 per cent of the maximum capacity. This will limit the amount of power available for commercial purposes after deducting the amount required by the Yuma project and Imperial Irrigation District for operating purposes and pumping at the period of minimum discharge. (/) It is planned that the power equipment installed in the construction power plant at Pilot Knob will be used in power plants Nos. 1 and 2. The first plant will be built entirely for construction purposes. Credit has been given in the estimate for the machine^ that will be transferred to the other plants. Therefore the cost of the plant given below should be depreciated within the period covered by construction and charged to the cost of furnishing power for construction purposes. (g) The estimated cost of developing the power plants without transmission lines is as follows: Estimated cost of power development. Item. Power plant No. I. Power plant No. 2. Construction power plant. Preparatory work.................... Excavating.......................... Buildings and foundations........... Machinery........................... Draft tubes, grillage, and trash boom. Gates and hoists..................___ Siphon spillway..................... Switch yard........................... Settling basin and cooling tower...... Operators' quarters..................~ . Improvement to grounds.............. $48, 610 3,670 148, 970 786, 020 14, 680 19,220 (l) 13,280 2,530 22,610 11,300 $48, 030 4,800 220, 520 1,057,130 18,010 21, 760 <l) 13,280 2,530 22,610 11,300 $43, 520 7,970 72, 530 388,000 4,750 12,320 74,840 3,390 5,650 Total.............. 15 per cent contingency. 1,070, 890 160,633 1,419,970 212, 995 612,970 91,950 Credit for machinery used. Total cost of plants. 1,231, 523 1,632, 965 704, 920 182,140 1, 231, 523 1, 632, 965 522, 780 1 Charged into canal construction. Porter J. Preston, Engineer. o